Type of pesticide used to repel pests, i.e., a pesticide formulated to keep pests away from African Violets and other plants, rather than killing them. Many organic pesticides are of this sort. For an example, see Neem.
a pesticide that makes a site or food unattractive to a target pest
a working substance, which frightens off but does not kill blood-sucking insects (midges, gnats, mosquitoes, fleas, etc
A chemical capable of preventing mosquitoes from feeding on a host.
A chemical or biological agent that makes unattractive to pests a habit, food source or other site ordinarily sought and frequented.
A chemical that is used to drive away insects, dogs or other pests.
An active ingredient in a product that has the ability to repel fleas and ticks, thus preventing them from infesting a dog or cat.